Livsmedelsbranschen förändras i takt med den miljö- och hälsotrend som sprids över det svenska matlandet med alltfler närodlade produkter, rustika förpackningar och produkter tillverkade med minimala svinn. Som kontrast, kan samtidigt uppmärkasammas de ungas ökade preferenser för sockerrika och energitäta livsmedel, och studier visar att åkommor som t ex diabetesrelaterade sjukdomar ökar. Med detta som bakgrund, kan bär- och fruktdrycker utan tillsatt socker eller andra tillsatser - där vitaminerna i jämförelse med energitätheten är hög - och som är behaglig att dricka, ligga rätt i tiden.Syftet med detta arbete var att utveckla ett dryckeskoncept kring hälsobefrämjande bärdryck baserad på blåbär- och lingonjuice.För att balansera socker-/syranivån i drycken provades några utvalda frukter och grönsaker. Dessa tillsattes i mindre mängd för att de inte skulle ta över de ursprungliga bärsmakerna i drycken. Även tillsatsen E170 kalciumkarbonat (CaCO3) testades vid olika nivåer, för att reducera syrainnehållet och testa vilken effekt detta har på smaken. Vi visade att det är möjligt att utveckla olika dryckeskoncept med god konsistens och god smak enligt provsmakarna, enbart utgående från bär, frukter och grönsaker. I svarta vinbär kan syranivån reduceras upp till 25 % med kalcium-karbonat utan märkbar påverkan på smaken. Analyser av den framtagna drycken visade att innehållet av hälsobefrämjande fenoler och antocyaner var relativt högt som följd av den höga andelen fenolrika bär i drycken. / The food industry is changing as the current environment and health trend spreads across the Swedish culinary nation, bringing more locally grown products, rustic packaging and products manufactured with minimal losses. Meanwhile, we see an increasing trend where young people's preference of food continue to grow towards sugar rich and energy dense foods. Studies also shows that disorders such as diabetes related diseases are increasing. With this in mind, berry and fruit drinks with no added sugar or other additives, where vitamins in relation to energy density is high and also pleasant to drink, might be just the thing for the present times.The aim of this work was to develop a beverage concept of a health promoting berry beverage based on billberry- and lingonberry juice.To balance sweetness/acidity levels in the beverage, a selection of fruits and vegetables were tested. These were added in smaller amounts to relieve the risk of overpowering the original berry flavors in the beverage. Also, the additive E170 calcium carbonate (CaCO3) was tested at different levels to reduce the acidic content and see how this would affect the flavor. We showed that it is possible to develop different beverage concepts with good texture and good taste according to the tasters, solely on the basis of berries, fruits and vegetables. In blackcurrant purée, the acidic levels can be reduced by up to 25 % using calcium carbonate without significantly impacting the flavor. Analyses of the produced beverage showed that the content of health promoting phenolics and anthocyanins were relatively high, as a result of the high proportion of phenolic rich berries used in the beverage.

Brackish water aquaculture is one of the largest coastal industries in Indonesia. This farming system involves the construction of ponds m coastal sediments. Many ponds in Indonesia have been abandoned due to past development of ponds in acid 8ulfate soils (ASS); these soils produce sulfuric acid through the oxidation of pyrite du ring and after the sediments have been excavated. The soils also contain elevated concentrations of metal such as iron and aluminium which are harmful to farmed fish and shrimp. Acidification of pond soil causes recurrent fish and shrimp mortalities, poor growth rate in fish and shrimp, soft shell syndrome in shrimp and low plankton densities, Pond maintenance costs in ASS are also significantly higher than non-ASS ponds. There are over 6.7 million ha of ASS In Indonesia of which 35% has been developed for brackish water aquaculture. This study developed and trialled methods of soil remediation to restore abandoned ASS-affected ponds. The main objective was to develop methods at remediation that were scientifically sound but also practical and inexpensive for farmers. The research involved characterising, in detail, the chemical and physical properties of ponds soil followed by laboratory-based experiments to improve soil properties. The results of laboratory trials were the basis for large-scale field experiments to test soil remediation strategies. The study showed that pond bottoms could be improved by forced oxidation, flooding and water exchange followed by Iiming and fertilising. Up to 500% increases in productivity were achieved by this method and soils conditions Improved significantly. A further twofold productivity increase was achieved by an integrated liming method in which lime is added to rebuilt or new dykes in layers. A juvenile shrimp production system was developed for ponds that were too severely degraded or costly to remediate. The research developed methods of preventing metal toxicity in Juvenile shrimp. The study showed that aquaculture ponds built in ASS could be remediated and returned to viable production systems. Importantly, the study has developed a more detailed understanding of chemical properties In ASS-affected ponds.

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